Ruling guide



J. w. WILT 2,415,926

RULING GUIDE Feb. 1s, 1947.v

Filed May 5, 1945 INVENroR, BY JWM A511 Y LQZ'W b MQ ATTORNEY.

atented e i Y RUMNG GE .lames W. Wilt, Iliaft, Galli.

Application May 5, 1945, Serial No. 592,239

` 4 Claims.

The present invention relates to a ruling guide for draftsmen, and hasforits principal object the provision oi a two part device having aframe which can be held in fixed position and a movable guide membertherein which can be shifted both angularly and linearly.

Another object is to provide a ruling guide in which the guide member isheld spaced above the surface of the work, in order to prevent smearing,so that the draftsman can make successive lines in ink without waitingfor each to dry. Another object is to provide a two part device in whichthe guide member can be quickly removed from the frame and anothersubstituted, with a diierent conformation of its ruling edge. y

Otherrobjects and advantages of the invention will be apparent from thefollowing description of a preferred 'form thereof, which should be readwith the understanding that the form, construction and arrangement ofthe several parts may be changed, within the limits of the claims heretoappended, without departing from the spirit of the invention as definedtherein.

Reference will be made to the accompanying drawing, in which Fig. 1 is apian viewof a preferred form oi my ruling guide.

Fig. 2 is an end elevation as viewed from the left hand end of Fig. 1.

Fig. 3 is a section on the line 3 3 oi' Fig. l..

Fig. 4 is an end elevation as viewed from the right hand end of Fig. 1.

In the drawing, the reference numeral ii desig nates an open rectangularframe made of metal, wood, or plastic material, with a iiat lowersurface. The side members 6 oi said frame are formed with inwardlyfacing grooves 1 which constitute guides for holding a movable iiat disk8. The disk is provided with a slot 9 whose edges I form the rulingguides for a pen indicated at li in Fig. 3.

The edges l of the slot 9 may have any desired contour, either straightand parallel as shown. or curved, and are beveled inwardly toward thebottom to provide a sharp ruling edge. It is contemplated that aplurality of disks will be provided with each frame, each disk having aslot of diderent contour, so that the user, by substituting one disk foranother in the frame, can choose the guide contour best suited to hisimmediate work.

The disk is movable in the frame, both linearly therein and rotatively,as indicated by the full and broken line *positions in Fig. 1. It isalso removable, for the substitution of another disk of different slotform, by sliding it out from the end of the frame. To prevent the diskfrom dropping out accidentally during handling of the in strument, a pini2 is provided at one end of one of the slots l, and a latch it isprovided at the other end, which normally obstructs the slot and retainsthe disk therein, but which can be swung up out oi the way to permitremoval of said disk when desired.

In using the instrument, the frame t is held dat upon the work on thedrafting board, preferabiy against a T-square, and the disk or guidememberD 8 is moved in the slots l until one of its guide edges itassumes the desired position. The line is thendrawn by causing the pento follow said guide edge it. Successive lines or parts oi the same linecan be drawn by properly shifting the disk without moving the frame, orin some eases, as in crosshatching, the disk can be held. .stan tionaryin the frame and the frame moved along or with the T-square. if curvesrather than straight lines are to be drawn, a disk having the properslot form. or contour is selected. During the drawing of a line, thedisk is held stationary by one ringer oi' the same hand that holds theframe stationary.

It will be appreciated that because the disk can be moved both linearlyand rotatively in the frame, one of its guiding edges can be broughtinto any position within the opening of the frame withoutl moving thelatter, and because of the elevation of the bottom of the dislr abovethe surface of the work, successive lines can be drawn without waitingfor the ink to dry and'without smearing.

I claiin 1. A ruling guide comprising a frame adapted to lie upon thesurface of the work. said trarne being formed from a sheet of rigidmaterial havw ing a iiat bottom and having two opposite turned upwardlyand inwardly to form mutually facing parallel grooves, the bottom ofsaid frame being cut away for the major portion of its area, a, diskhaving diametrically opposite portions of its edge slidably seated insaid grooves whereby said disk is rotatably and linearly movable in saidframe, and said disk member having an aperture therethrough from top-tobottom carpesu ing said work surface.

2. A ruling guide comprising two spaced paral lel members havingmutually facing grooves,

spaced transverse members connecting said' grooved members to form anopen frame adapted to lie upon the surface of the work, a disk having`dlalmetrically opposite portions of its edge slidably seated in saidgrooves whereby said disk is rotatably and linearly movable in saidtraine,

3 and said disk member having an aperture therethrough from top tobottom exposing said work surface.

3. A ruling guide comprising two spaced parallel side members havingmutually facing grooves, spaced transverse end members connecting saidside members to form an open frame adapted to lie upon the surface ofthe work, a disk having diametrically opposite portions of its edgeslidably seated in said grooves whereby said disk is rotatably andlinearly movable in said frame, said disk having an aperturetherethrough trom top to bottom exposing said work surface, and meanspositioned at the ends of said frame for engagement with said disk toprevent removal thereof from said slots, at least one of said diskengaging means being mounted for movement slidably seated in saidgrooves whereby said disk 25 is rotatably and linearly movable in saidframe.

and said disk member having an aperture therethrough from top to bottomexposing said work surface, one edge of said aperture being beveled toform an acute angle with one surface'ot said disk to form a. rulingguide. f

JAMES W. WILT.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNrrED STATES Primm Number Name Date 1,142,077 Buchanan June 8, 19151,436,415 Sullivan Nov. 21, 1922 1,672,751 Conti June 5, 1928 2,110,087Kuhn Mar. 1, 1938 570,977 Belcher Nov, 10, 1890 723,029 Schmitt Mar. 17,1903 FOREIGN PATENTS Number Country Date 231,615 British Apr. 9, 1925294,822 British Aug. 2, 1928 183,347 British July 27', 1922

